1. Free Univ. of Bolzano/Bozen; Piazza Univ. 1 39100 Bolzano Italy
2. Dept. of Nutrition, Dietetics and Food Science; Brigham Young Univ.; Provo UT 84602 U.S.A
3. TA Instruments; 890 W 410 N St. Lindon UT 84042 U.S.A
4. Dept. of Physics and Astronomy; Brigham Young Univ.; Provo UT 84602 U.S.A
5. Dept. of Chemistry and Biochemistry; Brigham Young Univ.; Provo UT 84602 U.S.A